The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Conjunction of the Moon and Mars

Mon, 18 Sep 2017 at15:44 EDT(66 days ago)
19:44 UTC

Dominic Ford, Editor
From the Conjunctions feed

Please wait
Loading 0/4
Click and drag to rotate
Mouse wheel to zoom in/out
Touch with mouse to dismiss
Ashburn
The sky at

The Moon and Mars will share the same right ascension, with the Moon passing 0°08' to the north of Mars. The Moon will be 28 days old.

From Ashburn (click to change), the pair will be difficult to observe as they will appear no higher than 12° above the horizon. They will be visible in the dawn sky, rising at 05:26 (EST) – 1 hour and 29 minutes before the Sun – and reach an altitude of 12° above the eastern horizon before fading from view as dawn breaks at around 06:37.

The Moon will be at mag -8.6, and Mars at mag 1.8, both in the constellation Leo.

The pair will be close enough to fit within the field of view of a telescope, but will also be visible to the naked eye or through a pair of binoculars.

A graph of the angular separation between the Moon and Mars around the time of closest approach is available here.

The positions of the two objects at the moment of conjunction will be as follows:

Object Right Ascension Declination Constellation Magnitude Angular Size
The Moon 10h41m20s +09°41' Leo -8.6 31'37"4
Mars 10h41m20s +09°33' Leo 1.8 3"6

The coordinates above are given in J2000.0. The pair will be at an angular separation of 17° from the Sun, which is in Virgo at this time of year.

The sky on 18 September 2017
Sunrise 06:53
Sunset 19:12
Twilight ends
20:43
Twilight begins
05:23

28-day old moon
Age of Moon
28 days

All times shown in EDT.
Rise Culm. Set
Mercury 05:33 12:06 18:40
Venus 04:34 11:21 18:07
Moon 05:13 11:51 18:29
Mars 05:25 12:00 18:34
Jupiter 09:19 14:53 20:27
Saturn 13:54 18:40 23:27

Warning

Never attempt to point a pair of binoculars or a telescope at an object close to the Sun. Doing so may result in immediate and permanent blindness.

Source

The circumstances of this event were computed using the DE405 planetary ephemeris published by the Jet Propulsion Laboratory (JPL).

This event was automatically generated by searching the ephemeris for planetary alignments which are of interest to amateur astronomers, and the text above was generated based on an estimate of your location.

Related news

22 May 2016, 07:10 EDT  –  Mars at opposition
27 Jul 2018, 01:07 EDT  –  Mars at opposition
13 Oct 2020, 19:19 EDT  –  Mars at opposition
08 Dec 2022, 00:35 EST  –  Mars at opposition

Image credit

The Moon in conjunction with Venus and Jupiter, with the Very Large Telescope in the foreground. Image © Y. Beletsky, ESO, 2009.

Ashburn

Latitude:
Longitude:
Timezone:

39.04°N
77.49°W
EST

Color scheme